Product details


Type Passive mux Function Type-C, USB3 USB speed (Mbps) 10000 Number of channels (#) 2 Supply voltage (Max) (V) 3.6 Supply voltage (Min) (V) 3 Ron (Typ) (Ohms) 5 Input/ouput voltage (Min) (V) 0 Input/ouput voltage (Max) (V) 2 Configuration 2:1 SPDT Features USB 3.1 (Type-C), Logic Controlled (Output Enabled) Rating Catalog Operating temperature range (C) -40 to 85, 0 to 70 ICC (Max) (uA) 800 ESD HBM (Typ) (kV) 2 Bandwidth (MHz) 8000 open-in-new Find other USB redrivers & multiplexers

Package | Pins | Size

VQFN (RKS) 20 11 mm² 4.5 x 2.5 open-in-new Find other USB redrivers & multiplexers


  • Provides MUX/DEMUX Solution for USB Type-C™ Ecosystem for USB 3.1 Gen 1 and Gen 2 Data Rates
  • Compatible With MIPI DSI/CSI, FPDLinkIII, LVDS, and PCIE Gen II, III
  • Operates up to 10 Gbps
  • Wide –3-dB Differential BW of over 8 GHz
  • Excellent Dynamic Characteristics (at 5 GHz)
    • Crosstalk = –32 dB
    • Off Isolation = –19 dB
    • Insertion Loss = –1.6 dB
    • Return Loss = –12 dB
  • Bidirectional "Mux/De-Mux" Differential Switch
  • Supports Common Mode Voltage 0 to 2 V
  • Single Supply Voltage VCC of 3.3 V
  • Commercial Temperature Range of 0°C to 70°C (HD3SS3212RKS)
  • Industrial Temperature Range of –40°C to 85°C (HD3SS3212IRKS)
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The HD3SS3212 is a high-speed bidirectional passive switch in mux or demux configurations suited for USB Type-C™ application supporting USB 3.1 Gen 1 and Gen 2 data rates. Based on control pin SEL, the device provides switching on differential channels between Port B or Port C to Port A.

The HD3SS3212 is a generic analog differential passive switch that can work for any high-speed interface applications requiring a common mode voltage range of 0 to 2 V and differential signaling with differential amplitude up to 1800 mVpp. It employs adaptive tracking that ensures the channel remains unchanged for the entire common mode voltage range.

Excellent dynamic characteristics of the device allow high-speed switching with minimum attenuation to the signal eye diagram with very little added jitter. It consumes <2 mW of power when operational and has a shutdown mode exercisable by OEn pin resulting <20 µW.

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Technical documentation

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Type Title Date
* Data sheet HD3SS3212x Two-Channel Differential 2:1/1:2 USB3.1 Mux/Demux datasheet (Rev. F) Sep. 30, 2016
White paper A primer on USB Type-C and Power Delivery applications and requirements (Rev. A) Jan. 08, 2021
Application note Schematic Checklist for HD3SS3212 and HD3SS3220 Mar. 31, 2020
Application note Enabling USB Type-C downstream ports for USB3.1 and 3.2 Hubs Dec. 12, 2019
Application note Passive Mux Selection Based On Bandwidth > Ron Sep. 11, 2019
White paper USB System Design Considerations: Switches and Redrivers Nov. 16, 2018
User guide HD3SS3212x EVM User's Guide Aug. 27, 2018
Application note High-Speed Layout Guidelines for Signal Conditioners and USB Hubs Jun. 14, 2018
Technical article How to select the right USB Type-C™ signal switches Mar. 20, 2018
White paper USB Type-C™ represents breakthrough connectivity Dec. 04, 2015
Technical article How USB Type-C helps make cars as smart as phones Jul. 10, 2015
White paper Transition existing products from USB 2.0 OTG to USB Type-C Jul. 10, 2015
Technical article USB Type-C for mobile phones: Changing the way phones connect, one flip at a time Jun. 26, 2015

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

document-generic User guide
The HD3SS3212EVM can be used to evaluate the high-speed bidirectional passive switching performance for USB Type-C™ mux or demux applications supporting USB 3.1 Gen 1 and Gen 2 data rates.  It is also compatible with MIPI DSI/CSI, LVDS, and PCI Express Gen 2 and Gen 3 interface standards.
  • Simple interface for high-speed signals through SMP connectors.
  • Universal banana jacks for external 3.3-V power supply.
  • Jumpers for easy device configuration.
  • Calibration traces for de-embedding the EVM from the HD3SS3212 during measurement.
document-generic User guide

The USB Type-C™ and Power Delivery (PD) MiniDock evaluation module (EVM) provides a complete reference solution for a USB Type-C dock including audio, USB data, power and video.  The EVM has a small 2-inch by 4-inch form factor and supports both source and sink power capabilities over the (...)

  • Plug-and-play design
  • Bidirectional power capabilities
  • DRP full-featured USB-C & PD port
  • Dual video (up to 4K) through HDMI or miniDP
  • Flash update over Type-C

Design tools & simulation

SLAR119.ZIP (184 KB) - S-Parameter Model
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SPICE-based analog simulation program
TINA-TI TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
document-generic User guide

Reference designs

USB Type-C HDD With USB Power Delivery Reference Design
TIDA-00882 This reference design uses Texas Instrument's SuperSpeed USB 3.0 to SATA bridge, USB Type-CTM and USB PD controller with integrated power switch and High-Speed USB mux, and SuperSpeed USB 3.1 mux to demonstrate the subsystems required to implement a Type-C external hard disk drive capable of (...)
document-generic Schematic document-generic User guide
USB Type-C™ and Power Delivery Minidock With Video and Charging Support Reference Design
TIDA-01243 — The USB Type-C® and power delivery (PD) minidock reference design provides a reference for a USB Type-C dock including audio, USB data, power and video.  This reference design has a small 2-inch by 4-inch form factor and supports both source and sink power capabilities over the primary (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
VQFN (RKS) 20 View options

Ordering & quality

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